Fix OpenAPI documentation in production environment

- Move OpenAPI schema to root path for easier access
- Add ROOT_PATH setting to support deployments behind proxies
- Add root route that redirects to documentation

app/core/config.py

@@ -8,6 +8,7 @@ class Settings(BaseSettings):
     PROJECT_NAME: str = "E-Commerce API"
     VERSION: str = "0.1.0"
     API_V1_STR: str = "/api/v1"
+    ROOT_PATH: str = ""  # For deployments behind proxies/subpaths, can be set via env var
     
     # CORS Settings
     CORS_ORIGINS: List[str] = ["*"]  # Allow all origins for development

main.py

@@ -9,9 +9,10 @@ app = FastAPI(
     title=settings.PROJECT_NAME,
     version=settings.VERSION,
     description="E-commerce API with FastAPI",
-    openapi_url=f"{settings.API_V1_STR}/openapi.json",
+    openapi_url="/openapi.json",  # Make OpenAPI schema available at root path
     docs_url="/docs",
     redoc_url="/redoc",
+    root_path=settings.ROOT_PATH,  # Support for deployments behind a proxy/subdirectory
 )
 
 # Set CORS middleware
@@ -26,6 +27,12 @@ app.add_middleware(
 # Include API router
 app.include_router(api_router, prefix=settings.API_V1_STR)
 
+# Root route to redirect to documentation
+@app.get("/", include_in_schema=False)
+async def root():
+    from fastapi.responses import RedirectResponse
+    return RedirectResponse(url="/docs")
+
 # Health check endpoint
 @app.get("/health", tags=["Health"])
 async def health_check():